Spontaneously generated X-shaped light bullets

Details Spontaneously generated X-shaped light bullets Spontaneously generated X-shaped light bullets

2003-03-20

arxiv.org/abs/physics/0303083v1

Physics

Optics

5 pages, 4 figures, submitted for publication

Scientific paper

10.1103/PhysRevLett.91.093904

We observe the formation of an intense optical wavepacket fully localized in all dimensions, i.e. both longitudinally (in time) and in the transverse plane, with an extension of a few tens of fsec and microns, respectively. Our measurements show that the self-trapped wave is a X-shaped light bullet spontaneously generated from a standard laser wavepacket via the nonlinear material response (i.e., second-harmonic generation), which extend the soliton concept to a new realm, where the main hump coexists with conical tails which reflect the symmetry of linear dispersion relationship.

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